Some aspects of polymer colloids I. Preparation and properties of different types of latex particles

Colloidal Stability of Polymer Colloids with Different Interfacial Properties: Mechanisms

“…Colymerization of hydrophobic and hydrophilic monomers 0d log W/d log C e Å 2.15 1 10 9 ag 2 /z 2 , [2] leads to a final dispersion stabilized by the electrostatic effect and by the existence of hydrophilic oligomers at the particle where g Å tanh(zec d /4kT ). surface (9). Our object in this paper is to apply the theory The Hamaker constant can be obtained experimentally of electrosteric stabilization to the study of the colloidal from the slope of the stability curve and the critical coagulastability of polymer colloids synthesized using a nonionic tion concentration (CCC) of the latex.…”

Preparation of Highly Charged, Monodisperse Nanospheres

“…The medium polarity was reduced as a result of acetone addition, causing higher solubility of styrene monomer in the medium and higher stability of the primary particles in the reaction medium. [12] For conventional emulsion polymerization, during which the nucleation occurs inside the micelles, the high solubility of monomer in the reaction medium will lead to larger resulting particles; [15,16] while in this study, the higher the concentration of monomer in the polymerization phase, the higher the number of oligomers was formed at early stage of polymerization. [13] In the mixed medium, the NaSS oligomers first form and then capture styrene monomer unit, and longer oligomers can form in the less polar medium before they exceed their solubility and precipitate into primary particles.…”

Latex Particles

“…The interfacial properties can be adjusted by the choice of stabilizer, initiator, and lyophilic co-monomers. For example, by changing these recipe components four different types of polystyrene latexes have been prepared and investigated in a comprehensive study [103]. The interface of an assumed model latex particle as sketched in Fig.…”